Really, while I can understand why it persists for psychological reasons, ‘prayer’ in general is a really weird fit for any religion with an omniscient deity, particularly one believed to be benevolent or to be acting according to a greater plan.
The “God, go fix this for me!” style requests are especially blunt and tactless; but even the most polite “Dear god, would you please kindly consider my petition for relief on matter X” stuff, while less blunt, is still logically pretty weird: if a deity is omniscient, it is fully aware of the petitioner’s situation(and likely knows it better than they do); and if the deity is benevolent or following-a-greater-plan, it presumably has reasons for the situation being as it is. No matter how tactful the request; one is providing information that the deity already has(at best, given that your information is imperfect you may just be providing a confused eyewitness misinterpretation); and requesting a reconsideration of an outcome that the deity has presumably allowed to come to pass for some good reason.
It’s a much better fit for the hellenic-pantheon style deities, where a god might not be familiar with your problem, in which case bringing it to his or her attention is perfectly reasonable; or might not be disposed to help you without some sort of incentive, in which case sacrifices, bargaining, etc. are perfectly reasonable things to do in order to try to move them to consider your case.
Again, I’m not blind to the fact that humans love their rituals, so I’m not surprised that prayer is still a thing among even the more austere flavors of monotheism; but even the “Thy will be done” stuff, which is the least demanding prayer possible, still seems wholly redundant. It’s not as though an omnipotent deity runs much risk of its will not being done; and you hardly need to say anything for an omniscient deity to detect your devotion or lack thereof.
